java.lang.IllegalStateException: Could not find backup for factory javax.faces.application.ApplicationFactory [duplicate]

Answer 1

See @BalusC answer here about the same problem. You have two jsf implementations in your pom.xml: myfaces and mojarra. So myfaces is conflicting with mojarra. Remove one of them

<!-- MyFaces -->
<dependency>
    <groupId>org.apache.myfaces.core</groupId>
    <artifactId>myfaces-api</artifactId>
    <version>2.2.2</version>
</dependency>

<dependency>
    <groupId>org.apache.myfaces.core</groupId>
    <artifactId>myfaces-impl</artifactId>
    <version>2.2.2</version>
</dependency>

<dependency>
    <groupId>org.apache.myfaces.core</groupId>
    <artifactId>myfaces-bundle</artifactId>
    <version>2.2.2</version>
</dependency>

or

<!-- Mojarra -->
<dependency>
    <groupId>com.sun.faces</groupId>
    <artifactId>jsf-api</artifactId>
    <version>2.2.2</version>
</dependency>
<dependency>
    <groupId>com.sun.faces</groupId>
    <artifactId>jsf-impl</artifactId>
    <version>2.2.2</version>
</dependency>